Domenica Fioredistella Iezzi

• PhD in Statistics
• Managing Director at University of Rome Tor Vergata

Communicating with social media has become a widely used mode among individuals and stakeholders. In this research, we investigate the relationship between the use of social media in the Italian community of patients with multiple sclerosis. To this end, we collected two kinds of data: (1) information through a structured questionnaire administered...

In this study, we introduce the Spherical Double K-Means (SDKM) clustering method for text data. A novel approach for simultaneous clustering of terms and documents. Using the strengths of k-means, double k-means, and spherical k-means, SDKM addresses the challenges of high dimensionality, noise, and sparsity inherent in text analysis. We address t...

According to Freud "words were originally magic and to this day words have retained much of their ancient magical power". By words, behaviors are transformed and problems are solved. The way we use words reveals our intentions, goals and values. Novel tools for text analysis help understand the magical power of words. This power is multiplied, if i...

Text analytics is a large umbrella under which it is possible to report countless techniques, models, methods for automatic and quantitative analysis of textual data. Its development can be traced back the introduction of the computer, but the prodromes date back, the importance of text analysis has grown over time and has been greatly enriched wit...

Currently, big corpora, coming from Open Government Data projects, in several research areas, allow quickly to available a large number of documents. In the legal field, many information are stored and therefore made it necessary to develop a specific dictionary to classify text data. The paper aims to present the workflow to visualize and classify...

Teachers’ work engagement positively impacts teachers’ attitudes towards their job. Nevertheless, teachers may experience burnout during their career, which negatively impacts their professional learning opportunities. In this study we investigated the relationship between teachers’ levels of burnout, work engagement, and their confidence in in-ser...

Focusing on methodologies, applications and challenges of textual data analysis and related fields, this book gathers selected and peer-reviewed contributions presented at the 14th International Conference on Statistical Analysis of Textual Data (JADT 2018), held in Rome, Italy, on June 12-15, 2018. Statistical analysis of textual data is a multidi...

According to Freud “words were originally magic and to this day words have retained much of their ancient magical power”. By words, behaviors are transformed and problems are solved. The way we use words reveals our intentions, goals and values. Novel tools for text analysis help understand the magical power of words. This power is multiplied, if i...

The International Conference on the Statistical Analysis of Textual Data (JADT, Journées d’Analyse Statistique des Données Textuelles) has been at its 14th edition. It was held for the third time in Rome, from 12 to 15 June 2018, organized by the DII - Department of En-terprise Engineering “Mario Lucertini” at Tor Vergata University of Rome and the...

The chapter investigates the strategies of publication in SSH, trying to identify the variables influencing publishing choices. It describes the VQR 2004–2010 exercise and journal articles collected in DB CINECA from 2004–2013. It analyses 49,712 scientific products of the VQR 2004–2010 in SSH (CUN areas 10–14), and 12,951 articles published by sch...

According to the Belgrade Charter (1975), “the goal of the environmental education is to develop a world population that is aware of, and concerned about, the environment and its associated problems, and which has the knowledge, skills, attitudes, motivations and commitment to work individually and collectively toward solutions to current problems,...

We analyze the educational projects proposed by the Italian National parks for schools: common themes of theoretical and practical lessons, multimedia audio-visual equipment, themes of working group of students. We use text clustering and social network analysis conjointly to classify the content of the educational project of parks. The environment...

The aim of this study was to validate the Italian version of the Copenhagen Burnout Inventory (CBI; Kristensen, Borritz, Villadsen, & Christensen, 2005), a public domain questionnaire evaluating the level of physical and psychological fatigue experienced by individuals with respect to personal, work-related, and client-related burnout. Participants...

In recent years, national natural parks have attracted more and more tourists. The reasons for this success could be the striking beauty of these areas, but there are three main motivations :( 1) sustainable tourism, (2) ecotourism and (3) nature tourism. Nature tourism pushes for the enjoyment of the beauty of flora and fauna but does not make an...

The aim of this work is to classify the contents of several reviews published by tourists/hikers about six pilot Italian national parks (Abruzzo, Molise and Lazio; Gargano; Pollino; Maddalena; Circeo and Gran Sasso). It is interesting to describe, in fact, as they talk about their experiences, what activities they participated in, but mostly wh...

In recent years, the interest of the community toward the observation and research of contact with nature has been growing; in particular, protected natural areas offer the opportunity not only to restore physical and mental wellbeing in areas of outstanding beauty, but also, above all, to progressively deepen the responsibility to protect unique e...

e-tourism is in stable growth and becoming one of the leading sectors in the e-commerce world. Social media and mobile technologies are holding an increasingly important role in the procurement processes of tourism, by both providing access to real-time information and promoting the exchange of experiences. Web mining allows the collection of new u...

The research focuses on the natural tourism in the Italian national parks. The aim is to draw cognitive maps for analyzing accommodation capacity as an indicator of attractiveness of the parks. We apply principal component analysis for reducing the numbers of indicators and for detecting latent variables (feature reduction). After this process,...

The National Institutes of Statistics are increasing in the use of administrative data, which are routinely collected by organizations as part of their business or operational activities. As a matter of fact, this huge amount of data is relevant whether by transforming in statistics for building information systems or by using them as additional in...

The paper analyses several indicators (political participation, trade union organizations, ecological associations, voluntary and cultural activities) of active citizenship in Italy, focusing on the profiles of the activists in relation to wellbeing and gender differences. A sample of around 49,000 individuals and 19,000 families from the survey “A...

In the last years, Universities have created an office of placement to facilitate the employability of graduates. University placement offices select for companies, which offer a job and/or training position, a large number of graduates only based on degree and grades. We adapt c-means algorithm to discover professional profiles from job announceme...

Text clustering is an unsupervised process of classifying texts and words into different groups. In literature, many algorithms use a bag of words model to represent texts and classify contents. The bag of words model assumes that word order has no signicance. The aim of this article is to propose a new method of text clustering, considering links...

Background: The challenges posed by the rapidly ageing population, and the increased preponderance of disabled people in this group, coupled with the rising level of public expenditure required to service the complex organization of long term care (LTC) delivery are causing increased pressure on LTC systems in Europe. A pan-European survey was car...

Women’s homicide (femicide) is the most serious form of violence against women. The aim of this paper is to propose a method to classify the underlying mechanism of killing. We analysed 1,125 cases of femicides in Italy from 2000 to 2005, 764 of these occurring in a domestic setting. The most important information about the mechanism of femicide is...

In the last two decades, Italian family has undergone profound changes. The role of traditional family has become weaker and new living arrangements have gained importance. The ISTAT multipurpose survey on "Households and social aspects" collected the Italianopinion about traditional role of the family. The aim of this study is to assess "Italian"...

La qualità della vita percepita nelle metropoli europee (di Domenica Fioredistella Iezzi) - ABSTRACT: The quality of life perception in European cities Objectives The quality of life (Qol) is a complex expression that includes different meanings. In this paper, Qol was assumed as a mix of qualitative and quantitative aspects. The qualitative approa...

The development of the European higher education system, within the frame of the Bologna process, requires that higher education be more and more integrated with the wider economic strategies (Lisbon objectives) and that employability be taken into account by the study programmes. Higher education institutions are invited not only to answer to the...

Via web recruitment is increasing in International job market, but Italy is late compared to industrial countries. We explore Information technology sector because this area brings up to date quickly. In this paper, we examine what employers demand to take on new staff through web advertisements. We apply classic multivariate methods (multidimensio...

Since 1999, Italian Universities have been monitoring teaching using students opinions to improve the quality of the education process. The acceleration of the evaluation has been promoted by ministerial laws, that have obliged Universities to write reports containing the main results. In this paper, the aim is to find a method to classify the Univ...

This paper focuses on the problem of forecasting a classification given a panel data set formed by a (multiple) time series of partitions of a same set of units. As far as we know, in classification and time series analysis this is a completely new problem. A methodology based on a vector autoregressive model is here proposed to directly forecast a...

Population issues are increasingly reported b y media. This interest has been d riven not only by important events s uch a s international conferences or news concerning population but also b y an increasing demographers attention in dissemination of demographic issues. Certainly the Italian media have become quite interested in d emographic issues...

Abstract On-line forums offer a considerable amount of information, which can be exploited in order to analyse contemporary,language. The aim of thispaper is to propose a statistical method,for analysing how the use of some words, that reported real life events, change ever time taking the form a new meaning,remote. Four newspapers-related forums,...

Riassunto. Negli ultimi anni, l'Università di Roma "Tor Vergata" ha ampliato i servizi di orientamento in ingresso, in itinere e in uscita. Sono stati attivati, inoltre, una serie di prestazioni on-line, come la banca dati per il Placement, Tor Vergata TV e prenotazione di concerti. Nella presente nota s'individua una graduatoria delle preferenze d...

Riassunto. L'attuale mercato del lavoro richiede che un laureato possieda non solo le conoscenze e le competenze del titolo acquisito, ma anche una serie di abilità di tipo trasversale. In questo contesto, diventa rilevante valutare l'efficacia esterna dei pro-cessi formativi dei diversi corsi di laurea. Attualmente molte indagini si occupano di mi...

Riassunto Nei convegni scientifici, gli studiosi discutono lo stato di avanzamento dei loro lavori e instaurano nuove colla-borazioni. Le conferenze, quindi, costituiscono un luogo privilegiato dove avviare dei legami con altri studiosi e promuovere nuove attività di ricerca. La collaborazione tra ricercatori rappresenta un prototipo di reticolo so...

Riassunto. I modelli di rappresentazione delle professioni descrivono in forma schematica i profili professionali dei lavoratori. Le tipologie di modelli esistenti possono essere suddivise in due macro-gruppi: top-down o enumerativi di categorie e bottom-up o descrittivo-analitici. I modelli più popolari utilizzano l'approccio teorico bottom-up, su...

Riassunto. Le competenze di un neolaureato sono un patrimonio costituito da un mix di elementi, alcuni dei quali dipendono dalla specificità del lavoro, altri sono caratte-ristiche personali e atteggiamenti che il soggetto mette in gioco nell'attuazione dei compiti assegnati. Le competenze possono distinguersi in tre macro aree: 1) cono-scenze; 2)...